Support fixed prefixes and suffixes when extracting terms from search template URLs.

components/search_engines/template_url_unittest.cc

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include <stddef.h>
 
 #include "base/base_paths.h"
 #include "base/command_line.h"
 #include "base/macros.h"
 #include "base/strings/string_number_conversions.h"
@@ skipping 1174 matching lines @@
       result);
 
   EXPECT_TRUE(url.ExtractSearchTermsFromURL(
       GURL("http://windows-1251.ru/path/%E1%F3%EA%E2%FB%20%C0%20%E8%20A"),
       search_terms_data_, &result));
   EXPECT_EQ(
       base::WideToUTF16(L"\x0431\x0443\x043A\x0432\x044B \x0410 \x0438 A"),
       result);
 }
 
+// Checks that the ExtractSearchTermsFromURL function strips constant
+// prefix/suffix strings from the search terms param.
+TEST_F(TemplateURLTest, ExtractSearchTermsWithPrefixAndSuffix) {
+  TemplateURLData data;
+  data.alternate_urls.push_back(
+      "http://www.example.com/?q=chromium-{searchTerms}@chromium.org");
+  data.alternate_urls.push_back(
+      "http://www.example.com/chromium-{searchTerms}@chromium.org/info");
+  TemplateURL url(data);
+  base::string16 result;
+
+  EXPECT_TRUE(url.ExtractSearchTermsFromURL(
+      GURL("http://www.example.com/?q=chromium-dev@chromium.org"),
+      search_terms_data_, &result));
+  EXPECT_EQ(ASCIIToUTF16("dev"), result);
+
+  EXPECT_TRUE(url.ExtractSearchTermsFromURL(
+      GURL("http://www.example.com/chromium-dev@chromium.org/info"),
+      search_terms_data_, &result));
+  EXPECT_EQ(ASCIIToUTF16("dev"), result);
+
+  // Don't match if the prefix and suffix aren't there.
+  EXPECT_FALSE(url.ExtractSearchTermsFromURL(
+      GURL("http://www.example.com/?q=invalid"), search_terms_data_, &result));
+}
+
 TEST_F(TemplateURLTest, HasSearchTermsReplacementKey) {
   TemplateURLData data;
   data.SetURL("http://google.com/?q={searchTerms}");
   data.instant_url = "http://google.com/instant#q={searchTerms}";
   data.alternate_urls.push_back("http://google.com/alt/#q={searchTerms}");
   data.alternate_urls.push_back(
       "http://google.com/alt/?ext=foo&q={searchTerms}#ref=bar");
   data.search_terms_replacement_key = "espv";
   TemplateURL url(data);
 
@@ skipping 573 matching lines @@
       GURL("https://www.foo.org/search?q=Y+Z"),
       search_terms_data_, &search_terms));
   EXPECT_EQ(base::ASCIIToUTF16("Y Z"), search_terms);
   EXPECT_TRUE(url.ExtractSearchTermsFromURL(
       GURL("https://www.foo.org/s#q=123"),
       search_terms_data_, &search_terms));
   EXPECT_EQ(base::ASCIIToUTF16("123"), search_terms);
 
   search_terms_data_.set_google_base_url("http://www.google.com/");
 }